The International Society for Subsurface Microbiology (ISSM) is made up of microbiologists, ecologists, geoscientists, and other researchers around the world fascinated by the various aspects of subsurface microbiology, a rapidly expanding field that focuses on microbial life below the surface of the earth. ISSM has organized numerous symposiums on subsurface microbiology in locations as diverse as Germany, Japan, New Zealand, USA and the UK. These symposia are meant to showcase the latest technologies and research in subsurface microbiology, including microbial ecology. The International Society of Subsurface Microbiology is honoured to invite you to its 11th international conference in Utrecht (The Netherlands) in June 2020. Abstracts due in September 2019.
The International Society of Subsurface Microbiology (ISSM) is pleased to invite delegates to attend ISSM 2017. This conference is the tenth in a series of international conferences devoted to providing a better understanding of the ecology, microbial community composition and function, and biogeochemistry of the earth’s subsurface environments. The Conference is being held in Rotorua, New Zealand, from 6-10 November 2017. Rotorua is a stunning location with a wide range of environments – physical, cultural and social, to discover and explore. The conference promises to be an unforgettable event that will bring together a wide range of international delegates from all around the globe. The conference will span 5 days, including a day of excursions, and over this period conference delegates will hear from leading experts in subsurface microbiology and discuss cutting edge developments in this area. Abstract submissions due May 8, 2017.
Due to health concerns and travel restrictions being put in place due to the COVID-19 coronavirus outbreak, we have decided to postpone The International Society of Subsurface Microbiology ISSM 2020 Conference in the Netherlands from June 14-19 to November 1-6. The deadline for submitting poster abstracts (oral presentation abstract submissions are now closed) has been extended to July 30, 2020.
International Ocean Discovery Program (IODP) Expedition 366 focused, in part, on the study of geochemical cycling, matrix alteration and transport, and deep biosphere processes in the Mariana subduction zone. This research was accomplished by sampling the summit and flank regions of three active serpentinite mud volcanoes in the Mariana forearc: Yinazao (Blue Moon), Fantangisña (Celestial), and Asùt Tesoro (Big Blue) Seamounts. These mud volcanoes represent a transect with increasing distance from the trench. Because these mud volcanoes discharge fluids and materials from the subduction channel, they provide a means to characterize thermal, geochemical, and pressure conditions within the seismogenic zone. Previous coring on Ocean Drilling Program (ODP) Legs 125 and 195 at two other serpentinite mud volcanoes (Conical and South Chamorro Seamounts, respectively) and piston, gravity, and push cores from several other Mariana serpentinite mud volcanoes add to this transect of deep-sourced material that is discharged at the seafloor.
Pore waters were squeezed from cored serpentinite materials to determine the composition of deep-sourced fluid from the subduction channel and to assess the character, extent, and effect of diagenetic reactions and mixing with seawater on the flanks of three serpentinite seamounts (Yinazao, Fantangisña, and Asùt Tesoro). In addition, two water-sampling temperature probe (WSTP) fluid samples were collected in two of the cased boreholes, each with at least 30 m of screened casing that allowed formation fluids to discharge into the borehole. Here we report shore-based Li, Rb, Cs, Ba, V, Mo, and U measurements of pore waters and one of the WSTP samples. The alkali metals were analyzed to constrain the temperature of reaction in the subduction channel. The other elements were analyzed to assess potential biogenic and diagenetic reactions as the serpentinite material weathers and exchanges with bottom seawater via diffusion. Results were generally consistent with earlier coring and drilling operations, resulting in systematic changes in the composition of the deep-sourced fluid with distance from the trench.
Authors: P. Fryer, C.G. Wheat, T. Williams, E. Albers, B. Bekins, B.P.R. Debret, J. Deng, Y. Dong, P. Eickenbusch, E.A. Frery, Y. Ichiyama, K. Johnson, R.M. Johnston, R.T. Kevorkian, W. Kurz, V. Magalhaes, S.S. Mantovanelli, W. Menapace, C.D. Menzies, K. Michibayashi, C.L. Moyer, K.K. Mullane, J.-W. Park, R.E. Price, J.G. Ryan, J.W. Shervais, O.J. Sissmann, S. Suzuki, K. Takai, B. Walter, and R. Zhang
Abstract: Geologic processes at convergent plate margins control geochemical cycling, seismicity, and deep biosphere activity in subduction zones and suprasubduction zone lithosphere. International Ocean Discovery Program Expedition 366 was designed to address the nature of these processes in the shallow to intermediate depth of the Mariana subduction channel. Although no technology is available to permit direct sampling of the subduction channel of an intraoceanic convergent margin at depths up to 19 km, the Mariana forearc region (between the trench and the active volcanic arc) provides a means to access materials from this zone.